/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:57:22,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:57:22,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:57:22,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:57:22,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:57:22,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:57:22,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:57:22,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:57:22,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:57:22,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:57:22,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:57:22,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:57:22,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:57:22,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:57:22,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:57:22,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:57:22,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:57:22,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:57:22,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:57:22,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:57:22,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:57:22,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:57:22,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:57:22,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:57:22,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 23:57:22,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:57:22,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:57:22,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:57:22,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 23:57:22,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:57:22,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:57:22,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:57:22,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:57:22,332 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:57:22,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:57:22,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:57:22,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:57:22,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:57:22,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:57:22,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:57:22,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:57:22,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:57:22,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:57:22,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:57:22,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:22,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:57:22,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:57:22,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:57:22,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:57:22,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:57:22,661 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 23:57:22,662 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 23:57:22,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl [2021-06-10 23:57:22,676 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl' [2021-06-10 23:57:22,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:57:22,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 23:57:22,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:22,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:57:22,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:57:22,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:22,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:57:22,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:57:22,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:57:22,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... [2021-06-10 23:57:22,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:57:22,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:57:22,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:57:22,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:57:22,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:22,807 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-06-10 23:57:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-06-10 23:57:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-06-10 23:57:22,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-10 23:57:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-10 23:57:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-10 23:57:22,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 23:57:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:57:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:57:22,811 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:57:22,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:57:22,937 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-06-10 23:57:22,938 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:22 BoogieIcfgContainer [2021-06-10 23:57:22,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:57:22,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:57:22,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:57:22,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:57:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:22" (1/2) ... [2021-06-10 23:57:22,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cfaf48 and model type Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:57:22, skipping insertion in model container [2021-06-10 23:57:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:22" (2/2) ... [2021-06-10 23:57:22,944 INFO L111 eAbstractionObserver]: Analyzing ICFG Bakery.bpl [2021-06-10 23:57:22,949 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:57:22,952 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 23:57:22,952 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:57:22,975 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 23:57:22,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-10 23:57:23,009 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:57:23,010 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:57:23,010 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:57:23,010 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:57:23,010 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:57:23,010 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:57:23,010 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:57:23,010 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:57:23,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-06-10 23:57:23,037 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-06-10 23:57:23,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:23,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-06-10 23:57:23,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 62 flow [2021-06-10 23:57:23,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2021-06-10 23:57:23,045 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:57:23,074 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 24 transitions, 54 flow [2021-06-10 23:57:23,079 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 24 transitions, 54 flow [2021-06-10 23:57:23,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 54 flow [2021-06-10 23:57:23,098 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-06-10 23:57:23,098 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:23,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-06-10 23:57:23,102 INFO L151 LiptonReduction]: Number of co-enabled transitions 216 [2021-06-10 23:57:23,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:23,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:23,509 INFO L163 LiptonReduction]: Checked pairs total: 571 [2021-06-10 23:57:23,510 INFO L165 LiptonReduction]: Total number of compositions: 8 [2021-06-10 23:57:23,512 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 468 [2021-06-10 23:57:23,531 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-06-10 23:57:23,531 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:23,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:23,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-10 23:57:23,533 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash 3468080, now seen corresponding path program 1 times [2021-06-10 23:57:23,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:23,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430438896] [2021-06-10 23:57:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:23,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:23,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:23,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430438896] [2021-06-10 23:57:23,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:23,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 23:57:23,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829433601] [2021-06-10 23:57:23,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 23:57:23,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:23,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 23:57:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 23:57:23,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:23,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:23,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:23,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:23,731 INFO L129 PetriNetUnfolder]: 30/86 cut-off events. [2021-06-10 23:57:23,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:23,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 86 events. 30/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 302 event pairs, 12 based on Foata normal form. 4/70 useless extension candidates. Maximal degree in co-relation 148. Up to 39 conditions per place. [2021-06-10 23:57:23,734 INFO L132 encePairwiseOnDemand]: 26/34 looper letters, 15 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2021-06-10 23:57:23,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 104 flow [2021-06-10 23:57:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 23:57:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 23:57:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2021-06-10 23:57:23,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2021-06-10 23:57:23,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2021-06-10 23:57:23,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2021-06-10 23:57:23,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:23,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2021-06-10 23:57:23,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,752 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,754 INFO L185 Difference]: Start difference. First operand has 23 places, 18 transitions, 42 flow. Second operand 4 states and 92 transitions. [2021-06-10 23:57:23,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 104 flow [2021-06-10 23:57:23,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:23,758 INFO L241 Difference]: Finished difference. Result has 24 places, 21 transitions, 76 flow [2021-06-10 23:57:23,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2021-06-10 23:57:23,760 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-06-10 23:57:23,760 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 76 flow [2021-06-10 23:57:23,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,761 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:23,761 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 23:57:23,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:57:23,761 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:23,762 INFO L82 PathProgramCache]: Analyzing trace with hash 107530246, now seen corresponding path program 1 times [2021-06-10 23:57:23,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:23,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402581641] [2021-06-10 23:57:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:23,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:23,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402581641] [2021-06-10 23:57:23,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:23,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 23:57:23,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366609250] [2021-06-10 23:57:23,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:23,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:23,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:23,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:23,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:23,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:23,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:23,810 INFO L129 PetriNetUnfolder]: 37/114 cut-off events. [2021-06-10 23:57:23,810 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-06-10 23:57:23,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 114 events. 37/114 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 448 event pairs, 8 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 239. Up to 49 conditions per place. [2021-06-10 23:57:23,812 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 8 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2021-06-10 23:57:23,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 120 flow [2021-06-10 23:57:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2021-06-10 23:57:23,814 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2021-06-10 23:57:23,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2021-06-10 23:57:23,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2021-06-10 23:57:23,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:23,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2021-06-10 23:57:23,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,816 INFO L185 Difference]: Start difference. First operand has 24 places, 21 transitions, 76 flow. Second operand 3 states and 65 transitions. [2021-06-10 23:57:23,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 120 flow [2021-06-10 23:57:23,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 23:57:23,818 INFO L241 Difference]: Finished difference. Result has 28 places, 27 transitions, 134 flow [2021-06-10 23:57:23,818 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2021-06-10 23:57:23,819 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2021-06-10 23:57:23,819 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 134 flow [2021-06-10 23:57:23,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,819 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:23,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:23,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 23:57:23,820 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1202629367, now seen corresponding path program 1 times [2021-06-10 23:57:23,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:23,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619873345] [2021-06-10 23:57:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:23,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:23,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:23,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:23,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:23,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619873345] [2021-06-10 23:57:23,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:23,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 23:57:23,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442583635] [2021-06-10 23:57:23,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 23:57:23,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:23,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 23:57:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 23:57:23,853 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:23,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:23,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:23,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:23,935 INFO L129 PetriNetUnfolder]: 44/134 cut-off events. [2021-06-10 23:57:23,935 INFO L130 PetriNetUnfolder]: For 81/92 co-relation queries the response was YES. [2021-06-10 23:57:23,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 134 events. 44/134 cut-off events. For 81/92 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 357 event pairs, 9 based on Foata normal form. 23/156 useless extension candidates. Maximal degree in co-relation 398. Up to 57 conditions per place. [2021-06-10 23:57:23,939 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 14 selfloop transitions, 16 changer transitions 0/41 dead transitions. [2021-06-10 23:57:23,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 258 flow [2021-06-10 23:57:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 23:57:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 23:57:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2021-06-10 23:57:23,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2021-06-10 23:57:23,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 122 transitions. [2021-06-10 23:57:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 122 transitions. [2021-06-10 23:57:23,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:23,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 122 transitions. [2021-06-10 23:57:23,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,952 INFO L185 Difference]: Start difference. First operand has 28 places, 27 transitions, 134 flow. Second operand 6 states and 122 transitions. [2021-06-10 23:57:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 258 flow [2021-06-10 23:57:23,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:23,958 INFO L241 Difference]: Finished difference. Result has 35 places, 37 transitions, 241 flow [2021-06-10 23:57:23,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2021-06-10 23:57:23,959 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2021-06-10 23:57:23,959 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 241 flow [2021-06-10 23:57:23,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:23,959 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:23,960 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:23,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 23:57:23,960 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash -612767567, now seen corresponding path program 2 times [2021-06-10 23:57:23,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:23,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728447607] [2021-06-10 23:57:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:23,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:23,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:23,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:24,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728447607] [2021-06-10 23:57:24,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:24,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:24,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926413081] [2021-06-10 23:57:24,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 23:57:24,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 23:57:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 23:57:24,017 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:24,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:24,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:24,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:24,093 INFO L129 PetriNetUnfolder]: 53/166 cut-off events. [2021-06-10 23:57:24,094 INFO L130 PetriNetUnfolder]: For 300/321 co-relation queries the response was YES. [2021-06-10 23:57:24,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 166 events. 53/166 cut-off events. For 300/321 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 625 event pairs, 9 based on Foata normal form. 29/191 useless extension candidates. Maximal degree in co-relation 544. Up to 71 conditions per place. [2021-06-10 23:57:24,095 INFO L132 encePairwiseOnDemand]: 27/34 looper letters, 23 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2021-06-10 23:57:24,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 379 flow [2021-06-10 23:57:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 23:57:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 23:57:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2021-06-10 23:57:24,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6294117647058823 [2021-06-10 23:57:24,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2021-06-10 23:57:24,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2021-06-10 23:57:24,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:24,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2021-06-10 23:57:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,101 INFO L185 Difference]: Start difference. First operand has 35 places, 37 transitions, 241 flow. Second operand 5 states and 107 transitions. [2021-06-10 23:57:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 379 flow [2021-06-10 23:57:24,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 360 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:24,108 INFO L241 Difference]: Finished difference. Result has 42 places, 38 transitions, 294 flow [2021-06-10 23:57:24,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2021-06-10 23:57:24,108 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 19 predicate places. [2021-06-10 23:57:24,108 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 294 flow [2021-06-10 23:57:24,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:24,109 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:24,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 23:57:24,109 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:24,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:24,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2043753238, now seen corresponding path program 1 times [2021-06-10 23:57:24,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:24,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009607931] [2021-06-10 23:57:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:24,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:24,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:24,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009607931] [2021-06-10 23:57:24,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:24,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 23:57:24,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732584755] [2021-06-10 23:57:24,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 23:57:24,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:24,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 23:57:24,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-10 23:57:24,187 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:24,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:24,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:24,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:24,243 INFO L129 PetriNetUnfolder]: 36/119 cut-off events. [2021-06-10 23:57:24,243 INFO L130 PetriNetUnfolder]: For 413/436 co-relation queries the response was YES. [2021-06-10 23:57:24,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 119 events. 36/119 cut-off events. For 413/436 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 5 based on Foata normal form. 24/140 useless extension candidates. Maximal degree in co-relation 479. Up to 48 conditions per place. [2021-06-10 23:57:24,244 INFO L132 encePairwiseOnDemand]: 27/34 looper letters, 15 selfloop transitions, 20 changer transitions 0/46 dead transitions. [2021-06-10 23:57:24,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 424 flow [2021-06-10 23:57:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 23:57:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 23:57:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2021-06-10 23:57:24,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5798319327731093 [2021-06-10 23:57:24,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2021-06-10 23:57:24,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2021-06-10 23:57:24,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:24,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2021-06-10 23:57:24,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,249 INFO L185 Difference]: Start difference. First operand has 42 places, 38 transitions, 294 flow. Second operand 7 states and 138 transitions. [2021-06-10 23:57:24,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 424 flow [2021-06-10 23:57:24,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 403 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:24,254 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 344 flow [2021-06-10 23:57:24,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2021-06-10 23:57:24,255 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 25 predicate places. [2021-06-10 23:57:24,255 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 344 flow [2021-06-10 23:57:24,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:24,255 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:24,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 23:57:24,255 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1780218348, now seen corresponding path program 2 times [2021-06-10 23:57:24,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:24,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584330549] [2021-06-10 23:57:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:24,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:24,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:24,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:24,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584330549] [2021-06-10 23:57:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:24,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 23:57:24,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967051823] [2021-06-10 23:57:24,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 23:57:24,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 23:57:24,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 23:57:24,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:24,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:24,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:24,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:24,357 INFO L129 PetriNetUnfolder]: 34/119 cut-off events. [2021-06-10 23:57:24,357 INFO L130 PetriNetUnfolder]: For 533/558 co-relation queries the response was YES. [2021-06-10 23:57:24,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 119 events. 34/119 cut-off events. For 533/558 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 342 event pairs, 3 based on Foata normal form. 26/143 useless extension candidates. Maximal degree in co-relation 497. Up to 48 conditions per place. [2021-06-10 23:57:24,361 INFO L132 encePairwiseOnDemand]: 27/34 looper letters, 20 selfloop transitions, 16 changer transitions 0/47 dead transitions. [2021-06-10 23:57:24,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 470 flow [2021-06-10 23:57:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 23:57:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 23:57:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-06-10 23:57:24,362 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6058823529411764 [2021-06-10 23:57:24,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-06-10 23:57:24,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-06-10 23:57:24,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:24,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-06-10 23:57:24,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,364 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 344 flow. Second operand 5 states and 103 transitions. [2021-06-10 23:57:24,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 470 flow [2021-06-10 23:57:24,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 411 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 23:57:24,369 INFO L241 Difference]: Finished difference. Result has 47 places, 41 transitions, 342 flow [2021-06-10 23:57:24,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2021-06-10 23:57:24,369 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 24 predicate places. [2021-06-10 23:57:24,369 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 342 flow [2021-06-10 23:57:24,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,370 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:24,370 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:24,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 23:57:24,371 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1091333509, now seen corresponding path program 1 times [2021-06-10 23:57:24,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:24,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522086087] [2021-06-10 23:57:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:24,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:24,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:24,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:24,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 23:57:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:24,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522086087] [2021-06-10 23:57:24,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:24,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 23:57:24,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077750094] [2021-06-10 23:57:24,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 23:57:24,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:24,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 23:57:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-10 23:57:24,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2021-06-10 23:57:24,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:24,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2021-06-10 23:57:24,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:24,480 INFO L129 PetriNetUnfolder]: 17/73 cut-off events. [2021-06-10 23:57:24,481 INFO L130 PetriNetUnfolder]: For 388/411 co-relation queries the response was YES. [2021-06-10 23:57:24,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 73 events. 17/73 cut-off events. For 388/411 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 1 based on Foata normal form. 22/95 useless extension candidates. Maximal degree in co-relation 331. Up to 26 conditions per place. [2021-06-10 23:57:24,481 INFO L132 encePairwiseOnDemand]: 27/34 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2021-06-10 23:57:24,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 431 flow [2021-06-10 23:57:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 23:57:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 23:57:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2021-06-10 23:57:24,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5630252100840336 [2021-06-10 23:57:24,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2021-06-10 23:57:24,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2021-06-10 23:57:24,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:24,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2021-06-10 23:57:24,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,485 INFO L185 Difference]: Start difference. First operand has 47 places, 41 transitions, 342 flow. Second operand 7 states and 134 transitions. [2021-06-10 23:57:24,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 431 flow [2021-06-10 23:57:24,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:24,488 INFO L241 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2021-06-10 23:57:24,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2021-06-10 23:57:24,489 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 26 predicate places. [2021-06-10 23:57:24,489 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2021-06-10 23:57:24,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:24,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 23:57:24,517 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:57:24 BasicIcfg [2021-06-10 23:57:24,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:57:24,532 INFO L168 Benchmark]: Toolchain (without parser) took 1829.64 ms. Allocated memory is still 356.5 MB. Free memory was 335.7 MB in the beginning and 340.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 160.2 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:24,532 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory was 336.8 MB in the beginning and 336.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:24,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.72 ms. Allocated memory is still 356.5 MB. Free memory was 335.5 MB in the beginning and 334.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:24,533 INFO L168 Benchmark]: Boogie Preprocessor took 13.21 ms. Allocated memory is still 356.5 MB. Free memory was 334.1 MB in the beginning and 333.2 MB in the end (delta: 860.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:24,533 INFO L168 Benchmark]: RCFGBuilder took 197.90 ms. Allocated memory is still 356.5 MB. Free memory was 333.1 MB in the beginning and 323.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:24,533 INFO L168 Benchmark]: TraceAbstraction took 1577.48 ms. Allocated memory is still 356.5 MB. Free memory was 322.7 MB in the beginning and 340.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 147.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:24,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory was 336.8 MB in the beginning and 336.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.72 ms. Allocated memory is still 356.5 MB. Free memory was 335.5 MB in the beginning and 334.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.21 ms. Allocated memory is still 356.5 MB. Free memory was 334.1 MB in the beginning and 333.2 MB in the end (delta: 860.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 197.90 ms. Allocated memory is still 356.5 MB. Free memory was 333.1 MB in the beginning and 323.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1577.48 ms. Allocated memory is still 356.5 MB. Free memory was 322.7 MB in the beginning and 340.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 147.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 430.6ms, 29 PlacesBefore, 23 PlacesAfterwards, 24 TransitionsBefore, 18 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 571 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 278, positive: 222, positive conditional: 0, positive unconditional: 222, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 137, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 137, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 137, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 170, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 125, negative conditional: 0, negative unconditional: 125, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 278, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 137, unknown conditional: 0, unknown unconditional: 137] , Statistics on independence cache: Total cache size (in pairs): 159, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1484.2ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 513.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 516.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 80 SDslu, 18 SDs, 0 SdLazy, 162 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 139.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 56.0ms SatisfiabilityAnalysisTime, 248.2ms InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 11/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...